[article]
| Titre : |
Additives for colorants and tinting systems |
| Type de document : |
texte imprimé |
| Auteurs : |
Johan Bieleman, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 155-170 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The paint industry is a highly competitive market; manufacturers share the need to improve the production efficiency and flexibility at the same time in order to optimize profitability and increase market share. Furthermore a growing number of products have to be produced in a large variety of colors and packaging within a short time. Historically the manufacturer has colored coating formulations with pigments dispersed in the coating vehicle. This approach required making many different tint pastes, in each vehicle system. Recent technological advances in pigment dispersing agents have allowed developing pre-manufactured colorants with a wide range of compatibility, such as waterborne and solventborne coatings. The colorants are liquid and can be added by means of gravimetric or volumetric tinting machines. The pigment loading may be adjusted from low to high pigment concentrations and are formulated using a vehicle/ stabilizer medium showing a wide range of compatibility. The formulation and performances of colorants based on following dispersant media will be demonstrated. ? Multifunctional polyether anionic surfactant for waterborne colorants, designed for use in architectural coatings (Nuosperse® FA 620) ? Diblock-polymer for waterborne colorants for industrial coatings (Nuosperse® FX 365) ? Nonionic. APE-free surfactant, for universal conlorants, compatible in waterborne and solventborne coatings (Nuosperse® FN 265) ? Nonionic polyether amid, for the preparation of NO-VOC universal colorants (Nuosperse® 2000) ? Triblock-copolymer, for solventborne coating formulations (Nuosperse® FX 9086). Special attention will he given to storage stability and compatibility of the colorants as well as to the effect of the colorants in various dosages to characteristic paint properties, including water sensibility, color development and gloss. It will be demonstrated that colorants produced with the dispersing agents can be used successfully for tinting purposes of a wide range of decorative and industrial coating formulations. |
| Note de contenu : |
- EXPERIMENTAL SECTION : Materials : - Colorant preparation – Colorant A : waterborne deco colorant – Colorant B : waterborne and solventborne decorative coatings, known as “universal colorants” – Colorant C : for use in waterborne and solventborne decorative coatings; NO-VOC – Colorant D : for use in solventborne decorative coatings – Colorant E : for use in waterborne industrial coatings – Colorant F: for use in solventborne industrial coatings, resin-free colorant – Colorant G : for use in solvent industrial coatings – Test methods
- RESULTS AND DISCUSSION : Colorant for use in decorative paints – Effect of the colorant on the wet adhesion – Maximum dosage – Solution to color development problems – Performance of the colorants in various paints – Colorants for industrial paints – Considering economics |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12130 |
in PAINTINDIA > N° spécial (01/2003) . - p. 155-170
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